Careful where you put your feet. I've broken a bowl and there is glass everywhere.
CORRECT - a recent action
I was exhausted. I was working since 7a.m.
X - "I had been working" -- the action "work" happened before being exhausted and explains why we are tired. Past simple keeps the events in order
Her eyes were red and it was clear she had cried.
X - ..."she had been crying" - Perfect Continuous focuses on the action not the completion
By the time she retires next year, she _______ (work) as a police officer for thirty years.
will have been working
This time next year I will have worked here for 10 years.
CORRECT - will have been working - is also possible but focuses on duration not completion
Mark and Tina have dated for six months.
X - "Mark and Tina have been dating for six months" - focus is on the duration/repetition - not the completed action
Before my son was born, I'd never been thinking I'd enjoy being a mother
X - I'd never thought I'd enjoy. -- think is a state verb
How many hours had you worked last week?
X- "How many hours did you work last week" - 1. It's specific time - we don't like to use perfect with specific time 2. there is no past simple as an "anchor"
I noticed a window was broken and the door was open. Someone broke in.
X - "...someone had broken in" - this happened before you noticed the door was open.
You look tired. What did you do?
X - What have you been doing? -- We are interested in the action that caused the result, not if it was completed.
I had gone to the shops before I came to the lesson.
Correct and X (both are possible) - "I went to the shops" -- the use of "before" as a linking device shows us the order of events.
How do you think everyday life will imporve by the time you are 70.
X - "How do you think everyday life will HAVE IMROVED" -- the time phrase "by the time" includes the period before and the point in time and is used with perfec
What have you eaten today?
CORRECT - unfinished time -- I may even eat more, who knows.
She __________ (wait) for her appeal to go to court for over a year.
has been waiting
He ________ (be) in prison for six years before evidence was found that proved his innocence.
had been
Which places had you visited by the time you were 20.
CORRECT -- "by the time" is often used with perfect aspect as it includes the time before you were 20
By 2050, he _________ (spend) 20 years in prison.
will have spent